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Reference type: Journal
Authors: Kazemi E, Dadfarnia S, Haji Shabani AM
Article Title: Synthesis of a novel molecularly imprinted polymer based on functionalized multi-walled carbon nanotubes for selective extraction of sulfadiazine prior to spectrophotometric determination.
Publication date: 2017
Journal: Journal of the Iranian Chemical Society
Volume: 14
Issue: (9)
Page numbers: 1935-1944.
DOI: 10.1007/s13738-017-1132-y

Abstract: A novel and efficient sulfadiazine imprinted polymer was synthesized via co-precipitation method and successfully grafted on magnetic multi-walled carbon nanotubes. The synthesized magnetic imprinted polymer was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray powder diffraction analysis, thermal analysis and applied as a sorbent for selective magnetic solid-phase extraction of sulfadiazine. The retained sulfadiazine was eluted by 150.0 μL methanol/acetic acid (6:4) solution and quantified by fiber optic linear array spectrophotometry via formation of a detectable azo dye. All parameters affecting the extraction of sulfadiazine were investigated and optimized. Under the optimized conditions, the method exhibited a linear dynamic range of 2.0-50.0 μg L-1 with a detection limit of 0.56 μg L-1 and enrichment factor of 300.0. The relative standard deviation at 30.0 μg L-1 of sulfadiazine (N = 6) was 2.8 and 4.6% for intra-day and inter-day, respectively. The method was successfully applied to determine sulfadiazine in human urine, honey, milk and environmental water samples
Template and target information: sulfadiazine
Author keywords: Magnetic solid-phase extraction, molecularly imprinted polymer, Functionalized multi-walled carbon nanotubes, Sulfadiazine, Diazotation

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